Collapse

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collapse

[kə′laps]
(engineering)
Contraction of plastic container walls during cooling; produces permanent indentation.
(materials)
The flattening of cells in heartwood during drying or pressure treatment; often characterized by a caved-in or corrugated surface appearance.

Collapse

 

acute vascular insufficiency accompanied by a fall in arterial and venous blood pressure.

Collapse is a result of a disturbance of the regulation of vascular tonus and injury to the vascular walls through infection, intoxication, massive blood loss, severe dehydration, myocardial affection (acute myocardial infarction), and other pathological conditions. Collapse is characterized by a decrease of blood flow to the heart, a deterioration of the blood supply to the vital organs, and the development of hypoxia. The patient’s facial features become pinched and the eyes roll back. He becomes pallid, with sticky perspiration and cold extremities. If the patient is conscious, he lies immobile and indifferent to his surroundings. Breathing is superficial and accelerated. The pulse is rapid. The most accurate index of the gravity of the patient’s condition is the degree to which arterial pressure is lowered. Severe collapse may be a direct cause of death. Collapse is treated with the immediate use of agents that stimulate the vascular and respiratory centers and with vasoconstrictors, blood transfusions, and blood substitutes. Measures should also be directed toward the elimination of the primary causes of the collapse.

collapse

Mechanical failure of cells in wood, usually caused by abnormal or forced drying.
References in periodicals archive ?
He said that fluid loss could lead to circulatory collapse and that the next few days would be critical.
Their symptoms include wheezing, vomiting, diarrhea, unconsciousness, or complete circulatory collapse.
Large doses of vitamin B1 may cause peripheral circulatory collapse.
Acute blood loss (hemorrhage) and subsequent circulatory collapse (shock) account for about half of all battlefield deaths, and the percentage has remained relatively unchanged since World War I.
While severe anaemia, cerebral malaria (1-4), acute kidney injury (5-6), multiple seizures, acute lung injury, circulatory collapse, etc.
The low SVR and the patient's rapid response to adrenaline suggested an anaphylactic reaction as the cause for his circulatory collapse and intravenous hydrocortisone (200 mg) was given, diphenhydramine (50 mg 8 hourly) ordered, and the pulmonary artery and urinary catheters changed to latex-free substitutes.
The condition is characterized by circulatory collapse, leading to organ failure and death.
This is particularly critical with the most lethal form, plasmodium falciparum, as other symptoms related to organ failure may occur such as acute renal failure, convulsions, circulatory collapse followed by coma and death.

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